NEETBotanyPhotosynthesis in Higher Plants
What immediate role does ATP play after its synthesis in the chloroplast?
Options
- AIt absorbs light energy
- BIt is used in biosynthetic reactions in the stroma
- CIt is stored for later use
- DIt breaks down glucose
Correct answer
B. It is used in biosynthetic reactions in the stroma
Step-by-step solution
Chemiosmosis requires a membrane, a proton pump, a proton gradient and ATP synthase. Energy is used to pump protons across a membrane, to create a gradient or a high concentration of protons within the thylakoid lumen. ATP synthase has a channel that allows diffusion of protons back across the membrane; this releases enough energy to activate ATP synthase enzyme that catalyses the formation of ATP. Along with the NADPH produced by the movement of electrons, the ATP will be used immediately in the biosynthetic react